{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Board Pearls","title":"Chapter 26, Ep 4 of 5: Pancreatic Cystic Lesions and Surveillance","html":"","width":"100%","height":180,"duration":663,"description":"Episode four takes the incidental cyst through the same endoscopic-ultrasound-and-fluid pathway used for the autoimmune mass, but the cost runs the other way: resecting a cyst that was never going to become cancer commits a patient to major-operation morbidity for nothing. The organizing question is whether the epithelium is mucinous, because only the mucinous lesions carry progressive dysplasia, and the fluid answers it, CEA and glucose for mucin, amylase for duct communication. Demographics and imaging give a pretest guess, then the biochemistry classifies the lesion cleanly. The intraductal mucinous neoplasm is the one left to surveil, where high-risk stigmata mandate resection, worrisome features trigger endoscopic ultrasound, and a size-stratified MRI schedule runs only while it can still change management. Thresholds are the trap throughout.\n \nTopics covered\n\nMucinous versus non-mucinous as the organizing principle\nDemographics and imaging of the five entities\nMucinous cystic neoplasm versus serous cystadenoma\nFluid biochemistry: CEA, glucose, amylase\nThe four-quadrant classification by CEA and amylase\nClinical pivots by cyst type\nHigh-risk stigmata versus worrisome features\nThe five- and ten-millimeter thresholds\nSize-stratified surveillance and stopping rules\n \n \nKey decisions\n\nThe decision to watch or resect tracks whether the epithelium is mucinous, since intraductal and mucinous cystic neoplasms harbor progressive dysplasia while serous cystadenoma, pseudocyst, and retention cysts have negligible malignant potential.\nA cyst fluid CEA above one hundred ninety-two nanograms per milliliter favors mucinous origin, a glucose below fifty is highly sensitive for a mucinous cyst, and an amylase above two hundred fifty units per liter supports duct communication.\nA mucinous cystic neoplasm goes to resection in a fit candidate regardless of size, while a confidently diagnosed serous cystadenoma needs no surveillance at all.\nAny one of the four high-risk...","thumbnail_url":"https://img.transistorcdn.com/-FuAdDBcPDLhEoUmroZKtOBRvuBn_FHPpYlh41hOnU4/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9iNzlh/ZTU4Y2MzNWExMjQ5/MjA5OWMwMmI3ZTk5/NGFiZS5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}